It depends on the distance of your route
Short Haul: 737-800
Mideum Haul: A330-300
Long Haul: B747-400
Super Long Range: A380-800
I suppose that depends on what 'Best' means to you... Best military fighter airplane; best passenger transport; best trainer aircraft, etc. "Best of all time" is just too broad a category to only have one answer.
Airbus A -380 can carry maximum passenger in the world. Its a biggest passenger aircraft in the world.
Concorde
Yes
No passenger aircraft can be idle in the air. Only a few number of military aircraft can do that. It is called hovering.
The Boeing Corporation produces passenger aircraft, cargo aircraft, military aircraft, and helicopters.
Boeings newest passenger aircraft is the 787
They are called aircraft passengers. What else do you think?
The Airbus A380 is the largest passenger aircraft.
Airbus A380
Oxygen is available in emergency overhead masks in passenger aircraft
The Concorde was the only supersonic passenger aircraft built, but many more were being considered before and after its conception.